@mixin border-shadow($direction) {
  @if $direction == left {
    box-shadow: -1px 0 8px #d3d4d6;
  } @else if $direction == bottom {
    box-shadow: 0 1px 8px #d3d4d6;
  } @else if $direction == right {
    box-shadow: 1px 0 8px #d3d4d6;
  } 
}